Compress MP4 is an online tool built to reduce the size of files of videos using MP4 compression technology. The online tool will reduce the size of any video to whichever size you want. Have you ever wanted to upload a video to the internet only to be notified that its size is too big? For example, when uploading a video via WhatsApp. Also, when uploading a video to Facebook, Twitter, or Youtube, you are bound to encounter this situation. Compress MP4 comes to your rescue to deal with this situation. All you have to do is upload the video first into the program for compression. It makes loading and sending video files much faster because their sizes will be reduced. It is faster to upload and send smaller video sizes.